RE: IndexError: too many indices for array: array is 0-dimensional, but 1 were indexed

[fridayorji]

I'm submitting a

• [ **] bug report.

Current Behaviour:

I 'm trying to generate rdf files as follows:

config = f"""
[DataSource1]
mappings=rules2.r2rml.ttl
db_url=mysql+pymysql://root:Kaboyacci3143@localhost/webgov
"""

import kglab

namespaces = {
"rv": "http://WebGov.RiversState.gov.ng/"
}

kg = kglab.KnowledgeGraph(
name = "RV WebGov KG",
namespaces = namespaces
)

kg.materialize(config)

save RDF as ttl

kg.save_rdf("rules2_rdf-triples.ttl")

save RDF as jsonld

kg.save_jsonld("rules2_rdf-triples.jsonld")

But I get "RE: IndexError: too many indices for array: array is 0-dimensional, but 1 were indexed" error

Expected Behaviour:

Generate the rdf files without the index error

Steps to reproduce:

My yml file, from which the mapping file is generated, is given as follows:

prefixes:
rv: "http://WebGov.RiversState.gov.ng/"

sources:
citizen:
queryFormulation: mysql
query: select * from citizen right join child_birth on citizen.citizenid = child_birth.experiencedby left join birth_reg on child_birth.child_birthid = birth_reg.associatedwith;

mappings:
citizenm:
sources: citizen
s: http://WebGov.RiversState.gov.ng/$(citizenid)
po:
- [a, rv:citizen]
- [rv:firstname, $(FirstName)]
- [rv:lastname, $(LastName)]
- [rv:dateofbirth, $(Date_Of_Birth)]
- [rv:sex, $(Sex)]
- p: rv:experiences
o:
- mapping: child_birth
condition:
function: equal
parameters:
- [str1, $(child_birthid)]
- [str2, $(child_birthid)]
child_birth:
sources: citizen
s: http://WebGov.RiversState.gov.ng/$(child_birthid)
po:
- [a, rv:child_birth]
- [rv:placeofevent, $(PlaceOfEvent)]
- [rv:dateofevent, $(DateOfEvent)]
- [rv:experiencedby, $(citizenid)]
- [rv:child_birthid, $(child_birthid)]

Snapshot:

Environment:

• python version 3.9.12
• pip version: 23.2.1
• OS details: Windows 10